//-- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License version 3.
//
// OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
// Copyright (C) 2006-2017 Jean-Philippe Lang
// Copyright (C) 2010-2013 the ChiliProject Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// See doc/COPYRIGHT.rdoc for more details.
//++

module.exports = function() {
    return function(ancestors) {
      if(!ancestors) return true;

      var directAncestors;

      if(ancestors.length > 1 && ancestors[0].payload.objectType === 'Project' && ancestors[1].payload.objectType === 'Project') {
        // discard expansion state of root if there's another project ancestor
        directAncestors = ancestors.slice(1);
      } else {
        directAncestors = ancestors;
      }

      return directAncestors.map(function(ancestor){
        return ancestor.expanded;
      }).reduce(function(a,b){
        return a && b;
      });
    };
};
